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Chassis number The chassis number is stamped on the right side of the steering head tube. Enter this number in the field on page no 1. Engine number, engine type The engine number and the engine type are stamped into the left side of the engine below the engine sprocket. Enter this number on page 1. Clutch lever The clutch lever [1] is located on the left side of the handlebars. The adjusting screw [A] is used to change the original position of the clutch lever (see maintenance work on chassis and engine). The clutch is hydraulically actuated and adjusts itself automatically. Hand brake lever The hand brake lever [2] is mounted on the handlebars on the right and actuates the front wheel brake. The adjusting screw [B] can be used to change the basic position of the hand brake lever (see maintenance work on chassis and engine). OPERATION INSTRUMENTS » 1 2 A B
ENGLISH 6 OPERATION INSTRUMENTS » TEST All of the display segments briefly light up for the display function test. WS (wheel size) The display changes and the circumference of the front wheel is briefly displayed in millimeters (2205 mm corresponds to a front wheel circumference of 21″ with production tires). Afterwards the display will return to the previous display mode. Electronic speedometer The display in the electronic speedometer is activated as soon as you press a button on the speedometer or an impulse is received from the wheel sensor. The display lights up when the engine is running. The display is cleared if no button is pressed for 1 minute or no impulse is received from the wheel sensor. The button is used to change between display modes. The + and – buttons are used to control various functions. SPEED display mode / H (service hours) Only the SPEED / H and SPEED / ODO display modes are activated in the condition at delivery. SPEED/H is displayed whenever the display is activated and the front wheel is not turning. It automatically changes to the SPEED/ODO display mode as soon as the front wheel starts turning. SPEED displays the speed. H displays the engine’s service hours. The service hour counter starts to count as soon as you start the engine. The displayed figure cannot be changed. Service intervals are indicated in service hours for some KTM offroad motorcycles, making the service hour counter a very practical function. SPEED / ODO display mode (odometer) The SPEED/ODO mode displays the speed and the total distance traveled. The display automatically changes to the SPEED/H display mode when the front wheel stops turning. + button no function – button no function briefly press buttonchanges to the next display mode hold button 3 secs. changes to the next display mode The electronic speedometer has a number of display modes (functions) that you can also activate (reveal) (see: Activating and deactivating display modes).
ENGLISH 7 OPERATION INSTRUMENTS » SPEED / LAP (lap time) display mode You can use the manual stop watch to stop and store up to 10 lap times, which you can view in the LAP/LAP display mode (see below). LAP displays the lap times in hours, minutes and seconds. + button Starts and stops the stop watch, lap time is not reset to 0 – button Stops the stop watch, stores the lap time and restarts the stop watch again. The time is reset to 0. A total of 10 lap times can be stored. If the lap time continues to run after you press the – button, all 10 memory locations are occupied.To clear all of the stored lap times, hold the button for 3 seconds in the SPEED/LAP mode.Up to 10 lap times can be stored in this way. briefly press buttonChanges to the next display mode.If no lap time is stored or the motorcycle is driving, the LAP/LAP mode will be skipped. hold button 3 secs. Clears all LAP figures SPEED / CLK (time) display mode CLK displays the time in hours, minutes and seconds. + button no function – button no function briefly press buttonchanges to the next display mode hold button 3 secs. set the clock menu To set the clock, see „Setting the clock”. Activating and deactivating display modes In the display mode SPEED/H, press and hold the button for 3 seconds to access the SETUP menu. The active functions will be displayed. The blinking function can be activated by pressing the + button and deactivated by pressing the – button. Press and hold the button 3 seconds to store the settings. If no button is pressed for 20 seconds, the setting will be stored automatically and the display will return to the SPEED/H mode. + button activates the blinking display – button deactivates the blinking display briefly press buttonchanges to the next display without changing any settings hold button 3 secs. starts the SETUP stores the settings and changes to the SPEED/H mode

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Hot start lever (250 SX-F) If you pull the red hot start lever [1] during the starting procedure backward, a bore in the carburetor will be opened through which the engine may take in additional air. The result is a „lean” fuel-air mixture of the type needed for hot starts.
ENGLISH 7 OPERATION INSTRUMENTS » Headlamp switch (EXCUSA) In this model the headlamp is switched on with the pull switch [1] . Flasher switch The flasher switch is a separate unit and is mounted on the left portion of the handlebar. The wire harness is designed in a way that whenever you want to use your bike off-road, you can dismount the entire turn indicator system without affecting the function of the remaining electrical system. Flasher left Flasher right Starter button (EXC) Pushing the black starter button [2] will actuate the E-starter. Emergency OFF switch (EXC Australia) The red emergency-OFF switch [3] is arranged adjacent to the throttle grip. In this position, the E-starter is operational and the engine can be started. In this position, the E-starter and ignition circuits are interrupted.The E-starter cannot be actuated, and the engine will not start, not even if you attempt to start it with the kickstarter. Pushing the black starter button [4] will actuate the E-starter. 2 3 4 5 6 Indicator lamps The green control lamp [5] flashes in the same rhythm as the flashing indicator when the indicator is working. The blue control lamp [6] lights up when the high beam is on

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Headlamp switch (XC-W) In this model the headlamp is switched on with the pull switch [1] . Flasher switch The flasher switch is a separate unit and is mounted on the left portion of the handlebar. The wire harness is designed in a way that whenever you want to use your bike off-road, you can dismount the entire turn indicator system without affecting the function of the remaining electrical system. Flasher left Flasher right Starter button Pushing the black starter button [2] will actuate the E-starter. Indicator lamps The green control lamp [5] flashes in the same rhythm as the flashing indicator when the indicator is working. The blue control lamp [6] lights up when the high beam is on. ENGLISH 7 2 Emergency OFF switch (EXC Australia) The red emergency-OFF switch [3] is arranged adjacent to the throttle grip. In this position, the E-starter is operational and the engine can be started. In this position, the E-starter and ignition circuits are interrupted.The E-starter cannot be actuated, and the engine will not start, not even if you attempt to start it with the kickstarter. Pushing the black starter button [4] will actuate the E-starter. 3 4 5 6 1 OPERATION INSTRUMENTS » ENGLISH 8 TEST All of the display segments briefly light up for the display function test. WS (wheel size) The display changes and the circumference of the front wheel is briefly displayed in millimeters (2205 mm corresponds to a front wheel circumference of 21″ with production tires). Afterwards the display will return to the previous display mode

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In a piston valve, the control of stem and seat leakage is obtained by tightness of the valve sealing rings to the body and valve plug. The bonnet compresses the valve sealing rings against the body and the valve plug. Flexible disc springs automatically assure a tight seal by exerting pressure on the valve sealing rings, keeping them compressed. Opening and Closing the TVS Isolation Valves The isolation valve begins to stop flow when the valve plug enters the lower valve sealing ring. When the isolation valve is completely closed, the valve plug is in contact with the full height of the valve sealing rings, ensuring the best possible seal. In fact, there is no advantage to be gained in torqueing the valve closed. Armstrong recommends that after closing the isolation valves completely, the handwheel should be turned back one half turn. This makes it easy to re-open the valve by avoiding metal to metal seizure. Troubleshooting – Isolation Valves A piston valve will retain its leak tightness for several years without maintenance. In severe service, such as rapid heating and cooling, some field maintenance may be required. Depending on the problem, these simple steps may help: ! ! ! ! ! Isolation Valve leaks, when the valve is closed . First, Check to make sure the valve is actually closed . Check to see if bonnet is seated on the body, if not, tighten the bonnet nuts until the bonnet seats. This recompresses the valve sealing rings against the body and the valve plug. If valve continues to leak, replace the isolation valve assembly

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Short circuit button (SX) The short circuit button [1] turns off the engine. When pressing this button, the ignition circuit is short-circuited. Combination switch (EXC) The light switch has 2, respectively 3 switch positions. [A] = Light off (this function is not available in all models) [B] = Low beam on [C] = High beam on You may use button [2] to actuate the horn. The red short circuit button [3] serves to switch off the engine. Leave the switch pressed until the engine stops. Headlamp switch (XC-W) In this model the headlamp is switched on with the pull switch [4] . Flasher switch The flasher switch is a separate unit and is mounted on the left portion of the handlebar. The wire harness is designed in a way that whenever you want to use your bike off-road, you can dismount the entire turn indicator system without affecting the function of the remaining electrical system. Flasher left Flasher right Emergency OFF switch (Australia) The emergency OFF switch [5] is located next to the throttle grip. Primarily designed as safety or emergency OFF switch, it should normally not be in its activated state. In this position, the ignition circuit is shorted; if the engine is running, it will stall immediately, if it is at standstill, it will not start. In this position, the ignition circuit is enabled; the engine should start. 1 2 3 5 A B C 4
ENGLISH 12 Filler cap To open it: turn filler cap counter-clockwise. To close it: put filler cap back on and tighten it by turning it clockwise. Install tank breather hose [1] without kinks. Filler cap (XC, XC-W) To open the filler cap: Turn the filler cap 45 ° counter-clockwise. To close the filler cap: Put the filler cap on and turn it 45 ° clockwise. Fuel tap OFF In this position the fuel tap is closed. No fuel can flow to the carbure- tor. ON During operation the twist grip must be turned to ON. This means that the fuel can flow to the carburetor. With the twist grip in this position the tank will be emptied until only the reserve is left. RES The reserve tank cannot be tapped until the rotating handle is turned to the RES position. Fill the tank as soon as possible and remember to turn the rotating handle back to the ON position so that you will have backup fuel next time, too. Reserve of the 8.5 l tank . . . . . . 1.3 l (0.32 USgallons) Reserve of the 10 l tank . . . . . .1.7 l (0.45 USgallons

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Digital speedometer, indicator lamps The green control lamp 1 flashes in the same rhythm as the flashing indicator when the indicator is working. The blue control lamp 2 lights up when the high beam is on. Electronic speedometer The electronic speedometer display is activated as soon as the engine is switched on and the motorcycle starts to move. The engine must be started in order for the speedometer to be supplied with electricity from the generator. An impulse must be received from the wheel sensor to activate the display; the front wheel must turn at least one time. TEST All of the display elements will light up for 1 second for the function test. WS (wheel size) The display will change and briefly show the diameter of the front wheel in millimeters. If the front wheel does not turn, the display will automatically change to the SPEED/H mode. If the front wheel turns, the display will automatically change to the SPEED /ODO mode. SPEED/H (hours) display mode When you stop driving and no impulses are sent from the wheel sensor, the display mode will automatically change from SPEED/ODO to SPEED/H. H shows the operating hours. The operating hour counter starts to count as soon as you start the engine. The displayed figure cannot be cleared. Service intervals are indicated in operating hours for some KTM offroad motorcycles, making the operating hour counter a very practical function. SPEED/ODO display mode The SPEED/ODO mode shows the speed and the total kilometers traveled. When the front wheel stops turning, the display will automatically change to the SPEED/H mode. The information will disappear in the display when the front wheel stops turning for 1 minute. NOTE: A Tripmaster switch (part no 583.14.069.244) is available as an accessory and enhances the electronic speedometer by providing the following functions: 2x Tripmaster 2x chronometer for the lap time Average speed Maximum speed Clock Display in miles

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Thanks to a history of competition successes, particularly in off-road racing, KTM motorcycles enjoy a large and loyal following. Established in 1953, KTM (from Kraftfahrzeuge Trunkenpolz Mattighofen where founder, Hans Trunkenpolz, had his engineering works) went through difficult times in the early 1990s. After a takeover, the Austrian company emerged as KTM Sportmotorcycle AG and has gone from strength to strength in recent years. Mainstay of their range are their Enduro and Motocross models, the EXC and SX, and these are covered in the latest new manual from Haynes. Models covered are the 250, 400, 450, 520 and 525 EXC and SX with 4-stroke sohc engines, 2000 to 2007. Information has also been included on the SMR Supermoto versions and MXC/XC derivatives. Haynes Manuals for cars and motorcycles are so popular that 150 million have been sold worldwide. Lay them end-to-end and they would circle the globe at the equator! The new manual begins with essential pre-ride checks, competition prep and routine maintenance tasks before moving on to more major repairs. There are comprehensive, fully illustrated, instructions for overhauling the engine, transmission, brakes, suspension and electrical system. Useful reference pages include colour wiring diagrams, fault-finding charts and a comprehensive section on tools and workshop tips. Because all Haynes Manuals are based on a complete stripdown and rebuild, not only are the procedures written from first-hand experience, but there is information about special tools required for each job, and its complexity, plus Haynes tips for saving time and money. The new Haynes KTM EXC Enduro & SX Motocross Manual is the only complete manual for owners of these motorcycles.

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Disconnect battery. 2. Mark location of timing plate in relation to inside of cam cover. This will give a starting point for timing on new module. Remove old ignition if applicable (see manual) Clymer, Haynes. 3. If your bike is not equipped with timing rotor M/W# 53-528 OEM#32402-83 you must buy one (included in kit). Also a single fire coil is needed (included in kit) M/W# 53-632. Any single fire coil rated 2-4 ohms can be used. NO SOLID CORE PLUG WIRES (copper, silver) they will damage the unit. 4. Install module: helpful hints, early model nose cones, i.e. Shovel Heads, the hole for the wire may need to be drilled out. Align with previously scripted mark for timing. Use lockwashers for stand offs for correct clearance of cover plate. Run wire loom. 5. Connect wires, see wiring diagram. Tape unused wires, green or brown. 12v to tach (brown) will damage module. Set timing. 1996 and later should not be timed 20˚ BTDC as the OEM module, but at 35˚ BTDC. Use this mark when using timing light. If VOESswitch is not used you must ground VOES wire (green) while timing. Refer to manual for correct identification of timing marks. At start up and timing, set spark advance in middle position. FUNCTION SWITCHES LED timing indicator light: When out, shows TDC. When ignition is on, LED will light up. When engine is cranking LED will blink. Electric Start/Kickstart: Set accordingly. VOES/Race mode: VOES switch lets the motor run smoother and improves gas mileage. If you don’t use it or add one tape up green wire and switch to race. VOES switch to use, M/W# 53-652. Spark advance: High compression motors should use race mode and 93 octane or better gas. Changing from VOES to race changes advance curves. Agood rule of thumb is if the engine knocks when throttle is applied in high gear, turn back spark advance curve until it stops engine knock. RPMlimiter: Set at desired RPM to cut engine power. Rear Cylinder: This is for racing and should be set at a dyno. +/-5˚. Rear cylinder timing is achieved through this adjuster. Most should dial to middle setting and leave alone. After all switches are set, install cover with supplied gasket and feel the increased performance of a solid state single fire ignition. Again, we remind you, if you don’t feel confident about installing this unit, let a qualified mechanic do it and be assured you are getting the best performance and gas mileage possible.